Portable display device



FIG. 1 is a front perspective view of a portable display device showing the new design in an open position illustrating an outer screen;

FIG. 2 is a front view thereof in the open position illustrating the outer screen;

FIG. 3 is a rear view thereof in the open position illustrating an inner screen;

FIG. 4 is a left side view thereof in the open position;

FIG. 5 is a right side view thereof in the open position;

FIG. 6 is a top view thereof in the open position;

FIG. 7 is a bottom view thereof in the open position;

FIG. 8 illustrates a rear perspective view thereof in the open position illustrating the inner screen; and,

FIG. 9 illustrates a perspective view thereof in a closed position illustrating the outer screen.

The broken lines in the drawings are for illustrative purpose only and form no part of the claimed design. 

CLAIM The ornamental design for a portable display device, as shown and described. 